OPTIMAL ARRANGEMENTS OF CARTRIDGES IN CAROUSEL TYPE MASS-STORAGE SYSTEMS

Optimal arrangements of cartridges and file partitioning schemes are e xamined in carousel type mass storage systems using Markov decision th eory, It is shown that the Organ-Pipe Arrangement is optimal under dif ferent storage configurations for both the anticipatory as well as the non-anticipatory versions of the problem, When requests arrive as per an arbitrary renewal process this arrangement is also shown to minimi ze the mean queueing delay and the time spent in the system by the req uests.